themes-wordpress/poesis/templates/404.html

<!-- wp:columns -->
<div class="wp-block-columns"><!-- wp:column {"lock":{"move":false,"remove":false}} -->
<div class="wp-block-column"><!-- wp:group {"style":{"position":{"type":"sticky","top":"0px"},"spacing":{"padding":{"right":"0","top":"0"}}},"backgroundColor":"tertiary","layout":{"type":"constrained"}} -->
<div class="wp-block-group has-tertiary-background-color has-background" style="padding-top:0;padding-right:0">

<!-- wp:pattern {"slug":"poesis/hero-cover"} /--></div>
<!-- /wp:group --></div>
<!-- /wp:column -->

<!-- wp:column {"verticalAlignment":"center","style":{"spacing":{"padding":{"top":"var:preset|spacing|60","bottom":"var:preset|spacing|80"}}}} -->
<div class="wp-block-column is-vertically-aligned-center" style="padding-top:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--80)"><!-- wp:group {"style":{"spacing":{"padding":{"top":"var:preset|spacing|70","right":"var:preset|spacing|70","bottom":"var:preset|spacing|70","left":"var:preset|spacing|70"},"blockGap":"var:preset|spacing|30"}},"layout":{"inherit":false}} -->
<div class="wp-block-group" style="padding-top:var(--wp--preset--spacing--70);padding-right:var(--wp--preset--spacing--70);padding-bottom:var(--wp--preset--spacing--70);padding-left:var(--wp--preset--spacing--70)"><!-- wp:columns -->
<div class="wp-block-columns"><!-- wp:column {"width":"10%"} -->
<div class="wp-block-column" style="flex-basis:10%"></div>
<!-- /wp:column -->

<!-- wp:column {"width":"80%","style":{"spacing":{"blockGap":"var:preset|spacing|30"}}} -->
<div class="wp-block-column" style="flex-basis:80%">

<!-- wp:pattern {"slug":"poesis/404"} /-->

</div>
<!-- /wp:column -->

<!-- wp:column {"width":"10%"} -->
<div class="wp-block-column" style="flex-basis:10%"></div>
<!-- /wp:column --></div>
<!-- /wp:columns --></div>
<!-- /wp:group --></div>
<!-- /wp:column --></div>
<!-- /wp:columns -->